Railway-frog



Patented Feb. 17, 1885..

(No Model.)

' W. H'. DIOKSON.

RAILWAY FROG. No; 312,443.

UNITED STATES PATENT OFFICE.

WILLIAM H. DIGKSON, OF PHILADELPHIA, PENNSYLVANIA.

RAILWAY-FROG.

SPECIFICATION forming part of Letters Patent No. 312,443, dated February 17, 1885.

Application filed January 22, 1884. (No model.)

specification and accompanying drawings, in

which Figure 1 is a top or plan view of a frogembodying my invention. Fig. 2 is a vertical section thereof in line :0 m, Fig. 1, enlarged. Fig. 3 is a vertical section thereof'in line 3 y, Fig. 1, enlarged. I

Similar letters of reference indicate corresponding parts in the several figures.

My invention relates to improvements in a railway-frog; and it consists in constructing the baseplate thereof integral with the frog-point and combining therewith holding devices, hereinafter set forth.

Referring to the drawings, A represents the frog-point, and B the guard-rails, which, excepting the features of my invention, are of usual form. The frog-point is constructed of cast-steel, and has at its base a laterallyprojecting plate, 0, which is preferably integral with said point, extending, however, only a portion of the length thereof,'thus using less metal in the construction, and consequently being produced at a much less cost than if extending the entire length of the point. wardly and inwardly, forming cheeks C, the plate C being of such width that a space exists between each cheek and the outer side of the adjacent guard-rail to receive awedge, D.

E represents fillings, formed with the frogpoint and abutting against the inner sides of the guard-rails. It will be seen that when the frog-point, with its base, is located, the guard-rails are inserted between the cheeks and fillings and moved against the filling. The wedges D are then driven into position, and as they tighten against the cheeks and the webs and bases of the guard-rails they The ends of the plate are turned upclamp the parts together and form a strong and compact structure, it being noticed that both the frog-point and the guard-rails are braced on both sides. It will also be seen that the wedges are prevented from rising, and so retain their position vertically.

In order to prevent longitudinal movement of the wedges, I-apply to the narrow end thereof set-screws or pieces, as at F, which control the longitudinal motions of the wedges.

In order to prevent longitudinal shifting of the guard-rails, I form-on the lower portions of the fillings E lugs, teats, or tongues G, and on the contiguous portions of the bases of the guard-rails recesses or grooves H, or vice versa, the tongues and grooves interlocking and being prevented from lateral separation by the action of the wedges D; hence longitudinal motions of the guard-rails are prevented, and the secure connection of the point and guard-rails is assured.

Having thus described my invention, what I claim as new, and desire to secure by Let ters Patent, is-

1. A frog-point having abase-plate integral therewith, said base-plate extending only a portion of the length of the point and pro vided with cheeks on its ends and wedges which tighten against the cheeks and guardrails, whereby the said point and the guardrails are securely connected and strengthened, substantially as and for the purpose set forth.

2. Afrog-point, in combination with guardrails and filling-pieces, the said guardrails and fillingpieces being provided with interlocking tongues, substantially as and for the purpose set forth.

3. A frog-point, in combination with fillingpieces and guard-rails provided with interlocking tongues and grooves preventing longitudinal motions of said guard-rails, substantially as and for the purpose set forth.

WVILLIAM H. DIOKSON.

\Vitnesses:

JOHN A. WIEDERSHEIM, A. I. GRANT. 

